html body {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}

#app {
  width: 100vw;
  height: 100vh;
  box-sizing: border-box;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.toggle-btn {
  position: absolute;
  right: 80px;
  top: 30px;
  cursor: pointer;
  padding: 12px 18px;
  border-radius: 5px;
  border: 1px solid #ccc;
  user-select: none;
}

.content {
  user-select: none;
}

::view-transition-old(*) {
  animation: none;
}

::view-transition-new(*) {
  animation: effects 0.5s ease-in;
}

@keyframes effects {
  from {
    clip-path: circle(0% at var(--x) var(--y));
  }
  to {
    clip-path: circle(100% at var(--x) var(--y));
  }
}
